package net.csdn.business.kanban.common.interceptor;


import net.csdn.business.kanban.common.annotation.RepeatSubmit;
import net.csdn.business.kanban.common.enums.ResultCodeEnum;
import net.csdn.business.kanban.common.utils.ExceptionUtil;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;


/**
 * @ClassName RepeatSubmitInterceptor
 * @Description 防止重复提交拦截器
 * @Author zhangyl
 * @Date 2023/7/14 09:44
 */
public abstract class RepeatSubmitInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if (!isEnabled()) {
            return true;
        }
        if (handler instanceof HandlerMethod) {
            HandlerMethod handlerMethod = (HandlerMethod) handler;
            Method method = handlerMethod.getMethod();
            RepeatSubmit annotation = method.getAnnotation(RepeatSubmit.class);
            if (annotation != null) {
                if (this.isRepeatSubmit(request, annotation)) {
                    ExceptionUtil.throwBizException(ResultCodeEnum.REPEAT_SUBMIT_ERROR, annotation.message());
                }
            }
        }
        return true;
    }

    /**
     * 验证是否重复提交由子类实现具体的防重复提交的规则
     *
     * @param request    request
     * @param annotation 注解
     * @return Boolean
     */
    public abstract boolean isRepeatSubmit(HttpServletRequest request, RepeatSubmit annotation);

    /**
     * 是否启用
     *
     * @return Boolean
     */
    public abstract boolean isEnabled();
}